Concentrate cartridge



FIG. 1 is a perspective view of a concentrate cartridge showing our new design;

FIG. 2 is a front elevational view thereof, the left side elevational view, the right side elevational view, and the rear elevational view are identical to FIG. 2;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a concentrate cartridge, as shown and described. 